Back Alley Doctor Glenn (闇医者グレン, yami-sha guren) is a book series that can be collected in Zero no Kiseki.
| Chapter | Title | Availability | Location |
|---|---|---|---|
| 1 | The Back Alley Doctor | ||
| 2 | The Request | ||
| 3 | The Patient | ||
| 4 | Quartz Sickness | ||
| 5 | Rufus | ||
| 6 | Katarina | ||
| 7 | The Clash | ||
| 8 | Irritation | ||
| 9 | Sherry | ||
| 10 | Hope | ||
| 11 | Resolve | ||
| 12 | The Operation | ||
| 13 | Prayer | ||
| Finale | Glenn |
